Watts-Volts-Amps-Ohms Calculator
Easily calculate any two of Watts (W), Volts (V), Amps (A), and Ohms (Ω). Enter any two values to get the other two instantly.
Formulas
- P = V × I
- P = I² × R
- P = V² ÷ R
- V = I × R
- V = P ÷ I
- V = √(P × R)
- I = V ÷ R
- I = P ÷ V
- I = √(P ÷ R)
- R = V ÷ I
- R = V² ÷ P
- R = P ÷ I²
Example Calculations
- V = 12V, I = 2A → P = 12 × 2 = 24W, R = 12 ÷ 2 = 6Ω
- P = 24W, R = 6Ω → V = √(24 × 6) = 12V, I = √(24 ÷ 6) = 2A
Watts-Volts-Amps-Ohms Table
| P (W) | V (V) | I (A) | R (Ω) |
|---|
| 24 | 12 | 2 | 6 |
| 60 | 20 | 3 | 6.67 |
| 100 | 10 | 10 | 1 |
Electric Calculator